Windivert Driver Cannot Be Installed You Must Restart Your Computer Top

: Antivirus software (like Sophos) or Windows' Memory Integrity setting can block the driver. Try temporarily disabling Memory Integrity in Windows Security > Device Security > Core Isolation .

While it sounds obvious, many users attempt to restart but encounter "Fast Startup" issues in Windows 8, 10, and 11, which do not fully clear the kernel memory. : Antivirus software (like Sophos) or Windows' Memory

Disable your Real-Time Protection for 5 minutes and try running the app again. Disable your Real-Time Protection for 5 minutes and

: If you are running this in a virtual machine (VM), some environments do not support the low-level driver access WinDivert requires. It allows software to intercept, inspect, and modify

WinDivert is a user-mode packet capture and diversion library. It allows software to intercept, inspect, and modify network packets. Because it operates at the kernel level (via a driver), it requires deep system privileges. Windows treats driver installations with strict security checks. If a previous version of the driver was not unloaded correctly, or if Windows has a pending reboot flag set, the system will block the new installation until the state is cleared.